The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2023
Filed:
Jun. 09, 2021
Proton World International N.v., Diegem, BE;
Olivier Van Nieuwenhuyze, Wezembeek-Oppem, BE;
PROTON WORLD INTERNATIONAL N.V., Diegem, BE;
Abstract
A method of checking the authenticity of at least a first portion of the content of a non-volatile memory of an electronic device including a microcontroller and an embedded secure element is disclosed. The method includes starting the microcontroller with instructions stored in a first secure memory area associated with the microcontroller and starting the secure element. The secure element has a plurality of decipher keys, each associated with a portion of the content of a second reprogrammable non-volatile memory area associated with the microcontroller. The secure element performs a signature check on a first portion of the content of the second area. If the signature is verified, the secure element sends the decipher key associated with the first portion to the microcontroller. If the signature is not verified, the secure element executes a signature check on another portion of the content of the second memory area.